Car-truck.



H. M. PFLAGER.

CAR TRUCK.

APPLICATION HLED' JULY e\ |917.

Patented Sept. 10, 12H8.

4 SHEETS-SHEET 2.

H. IVI. PFIAGER. CAR'THUCK.

APPLICATION FILED IULY bY I917.

aented Sept l0, HHS.

4 SHEETSSHEET orossscctijon with the bottom wall or plate.

cut away 'at points between the pedestal The outer ,ii-fall. ofthe wheel piece is cut .away at suitablepoints, preferably between 'the pairs of pedestal jaws, to permit the ready insertion or removal of the equalizer members and springs constituting my improved flexible support.

Supported by the journal. boxes le and extending upward into the substantially hollow wheel pieces are sets of helical kcom-- 'pression springs 16, preferably oit' the nested type, that is, there are two or more springs of diier'e'nt sizes arranged one within the other for each set.' Arranged within each wheel piece is-a pair of substantially rigid or noi'1elastio equalizing members 17 and formed in the underside of the outer end of each member is a pocket 18 which incloses the upper portions of those springs which are located on the corresponding one of the end or outer journal boxes.

The inner ends oi 'he eouslicingv members 17 terminate immediately adjacent to each other at a point directly above the center of the middle one of the journal boxes yand formed in the undersides of said inner ends are pockets 19 which receive the upper porm tions of the sets of springs which are sup ported' by the central journal hon, and a plate/'20 which is positioned on top of said last mentioned sets of springs.

Formed in 'each equalizing member 'i7 is a pocket Q-l in which is located a series of sets of helical compression springs 22, the upper ends thereof bearing directly against the underside of the top plate or the hollow wheel piece.

The distance from the center of each pocket 1S to the center oli' the pocket 21 is approximately half` the distance from the center of said pocket E21 to the center of the pocket il) at the inner end of the equalizing member, such arrangement being necessary to properly equalize the weight of the truck frame and parts carried thereby upon the journal boxes.

The pocket 2l is of substantial depth; in fact, it extends practically to the bottom `of the body -of the equalizing' member i7, and thus the walls surrounding said pocllets serve as a housing for the greater portions ofthe springs positioned in said pocket.

ln the modified construction illustrated. in Figs. el., and tl, the ends o?? the equalizing member upon helical springs, which latter are si'lpported by the journal looxes and the upper portion of said eoualizing member bears directly against and iulcruins upon a pair of transversely disposedhars 23 which are iXed to the 'underside of the top ,are

jaws for the accommodation of the journall "boxes and 'the springs mounted thereupon.

,use

plate or the hollow'wheel piece. These bars are preferably half round in cross section and occupy corresponding recesses formed in the top of the equaliziug member.

ln lig. 5 l have shown one of the ulcrum members proiiidcd with a pair of integral Shanks or pins S24 which pass through the top plate of the hollow wheel piece of the truck frame and the upper ends of said shanks or pins being riveted down onto said top plate to firmly secure said fulcrum .member, Another form of fastening for the fulcrum member is illustrated in Fig,` 6, where -a rivet 25 passes through the top plate of the wheel piece and-the body of said fulcrum member.

ln the modified construction illustrated in Figs. 7 and 8, the ends of the equalizing member 17 bear directly upon blocks 26 which rest directly upon the journal boxes and said equalizing member provided with a comparatively deep pocket 27 which receives two or more sets of helical comr pression springs 28, the latter bearing against the underside 'of the top plate or flange of the truck frame wheel piece. ln this construction the pedestal jaws i3@ are extended upward as designated by 13b, the upper ends of said extensions being rigidly `fixed in any suitable manner to the upper portion of the wheel piece and the equalizing member 17a passes between this eatenI sion and the vertical wall ol' the wheel piece. (See lig; 8.)

lu the modified construction illustrated in Figs. 9 and l0, the wheel piece of the truck frame is substantially Zshape in cross section with the top flange outwardly presented and the equalizing member 17h lies beneath this top flange with its ends curved downward as designated by 29 and bearing directly 'upon the journal box. ln thisy con-- struction, the outer/portions of the pedestal jaws are `extended upward and secured to the top flange 'of the wheel piece and the end portions of the equalizing member lie between these upward extensions and the 'vertical web or the wheel piece. The equal izing member in this form is provided with a cup-shaped pocket 30 which serves as a receptacle and housing for a single large helical spring 3l or a series of nested springs, the upper ends of which haar directly against the. underside of the top dangle of the wheel piece.

ln the modified constructionillustrated iu Figs. ll and l2, the ends of the equalizing member 1'4" bear directly upon vthe journal boxes and said equalizing member is provided with a cup-shaped pocket of substantial depth and sufficient length to ao cominoda'te two or more sets of helical com.- pression springs 33.

ln the modiiioation illustrated in l,

the efpialisingv member IiP/(lis provided w'th. 

